The general rotatable releasing tool that sets of hanger packer
Technical field
The utility model relates to a kind of oil gas field completion and oil recovery gas producing technology technique device, particularly the general rotatable releasing tool that sets of a kind of hanger packer.
Background technology
At present, in the Completion Operations of oil gas field, especially in the Completion Operations of horizontal well, extended reach well, often need to utilize the hanger rotation to be lowered to tail pipe, perhaps need in process of production with top packer a part of flow string to be suspended in the sleeve pipe, after finishing hanger seat extension or packer setting, again running string is put aside from hanger or packer, and proposed well head.For various dissimilar hangers or the different releasing gadget of the general employing of packer, this releasing gadget often is designed to one with hanger or packer, in case the rear releasing gadget that fulfils assignment is generally passed into disuse.For needs carryings highlyer draw, compressive load, and can enoughly drive the tail pipe rotation than high pulling torque, and the hanger with the multiple mode of giving up, it is expensive, mechanism and processing assembly and adjustment complex process, versatility are poor, and easy actual effect during lower well operations, thereby limited promoting the use of of this hanger of giving up.Therefore, be necessary to develop a kind of new releasing tool, to overcome the problems referred to above that exist in the existing apparatus.
Summary of the invention
The purpose of this utility model be to provide a kind of simple in structure, easy to use, reusable and can carry highlyer draw, compressive load and the general rotatable releasing tool that sets of hanger packer with reliable releasing function.
To achieve these goals, the technical solution of the utility model is as follows:
The general rotatable releasing tool that sets of a kind of hanger packer comprises that give up assembly and hanger packer of hanging setting connects the sealing shroud assembly.The hanging setting assembly of giving up comprises top connection, central tube, urceolus, urceolus shear pin, lock dog spring, baffle ring, hold-down screw, moment of torsion lock dog, piston shear pin, piston, connecting rod, lock dog, lower contact, piston bush, lock ring, support set, support set shear pin, band tooth lock ring, connecting rod cover, slip ring, guide rod, spring, piston bush lock ring, upper seal head, exterior seal ring, seal head joint, upper leather cup, down cup, ball seat and bottom joint.
The lower end of top connection is connected by screw thread with the upper end of central tube, and the lower end of central tube is connected by screw thread with the upper end of lower contact.Urceolus is enclosed within the outside of central tube, and its upper end is provided with the urceolus gear shaping.The lower end of top connection is provided with the top connection gear shaping, and the space width of top connection gear shaping is identical with the space width of urceolus gear shaping.The tooth top of the tooth top of top connection gear shaping and urceolus gear shaping is fitted one by one.Top connection is fixedly connected with by the urceolus shear pin with urceolus.The bottom of urceolus is provided with groove; Baffle ring is enclosed within the central tube outside, and the inner peripheral surface of the outer circumference surface of baffle ring and top connection fits.The moment of torsion lock dog is embedded in the groove, and the moment of torsion lock dog is fixedly connected with baffle ring by hold-down screw.The lock dog spring is arranged between top connection and the central tube, and the bottom of lock dog spring is connected with the moment of torsion lock dog.Piston bush is on central tube, and piston is fixedly connected with by the piston shear pin with central tube.Piston bush is connected with piston by screw thread, and support set is enclosed within on the central tube, and support set is fixedly connected with by the support set shear pin with central tube.The upper end arranged outside of support set has the support set boss, the inboard, lower end of piston bush is provided with the piston bush boss, the upper and lower end face of lock ring fits with the lower surface of support set boss and the upper surface of piston bush boss respectively, when piston bush moves upward, can apply motive force upwards to support set by lock ring.Inside and outside both sides with the tooth lock ring are connected with central tube and support set by unidirectional inclined-plane tooth respectively, when support set moves upward, can drive the tooth lock ring and move upward, and band tooth lock ring can stop support set to move downward by described unidirectional inclined-plane tooth.The connecting rod cover is enclosed within the outside of central tube; The up and down two ends of connecting rod are fixedly connected with lock dog with the connecting rod cover respectively.Be respectively arranged with gradient supporting surface and guiding incline on the upper and lower end face of lock dog.Slip ring sleeve is outside at the connecting rod cover, and the connecting rod cover is connected with support set by screw thread.Spring is arranged on slip ring inside, and guide rod is fixedly connected with the connecting rod cover, and spring housing is outside at guide rod, and is connected with guide rod.On the sidewall of central tube, be provided with pressure transmission hole near the piston bush place, be disposed with from down to up the second rigid support ring, the second flexible support ring, the first sealing ring, the first flexible support ring, the first rigid support ring that is enclosed between central tube and the piston bush above the pressure transmission hole; Be disposed with from top to bottom the 3rd rigid support ring, the 3rd flexible support ring, the second sealing ring, the 4th flexible support ring, the 4th rigid support ring that is enclosed between central tube and the piston bush below the pressure transmission hole.The piston bush lock ring is entrenched in the groove that arranges on the central tube, and the upper surface of the lower surface of piston bush lock ring and the 3rd rigid support ring fits.
The up and down two ends of upper seal head are connected by screw thread with the lower end of lower contact and the upper end of seal head joint respectively.Exterior seal ring is enclosed within the outside of seal head, and the interior latus rectum of the external diameter of exterior seal ring and hanger or packer is complementary.The outer cover of seal head joint has the rim of a bowl upper leather cup and down cup up, and the external diameter of upper leather cup and down cup is complementary with the interior latus rectum of hanger or packer respectively.The lower end of seal head joint is connected with the bottom joint, and ball seat is threaded connection the inside at the bottom joint.
The hanger packer connects the sealing shroud assembly and comprises upper seal bore and lower seal cylinder.The lower end of lower seal cylinder is connected with hanger or packer by screw thread, and the inside of upper seal bore is stretched in the upper end of lower seal cylinder, and is connected by screw thread with the lower end of upper seal bore.The interior latus rectum of lower seal cylinder is identical with the maximum outside diameter of lower contact.Be provided with draw-in groove on the inner peripheral surface of lower seal cylinder, the height of draw-in groove is identical with the height of lock dog.The top of draw-in groove is provided with the support inclined-plane, and the gradient of the supporting surface that arranges on the gradient of supporting oblique surface and the lock dog is identical.The upper end of lower seal cylinder is provided with torsional channel, and the width of this torsional channel is identical with the width of moment of torsion lock dog.
Said apparatus connects sealing shroud assembly two parts by hanging setting is given up assembly and hanger packer and combines to finish its function.When assembly that hanging setting is given up is packed hanger packer connection sealing shroud assembly from top to bottom into, be subjected to the restriction of lower seal cylinder internal diameter, lock dog overcomes the elastic force of spring inwardly retracts, until behind the lock dog arrival draw-in groove place, lock dog loses external constraint and stretches out.Because lock dog is identical with the height of draw-in groove, lock dog just is stuck in the draw-in groove.Meanwhile, the conical surface on the urceolus withstands on the upper surface of lower seal cylinder, and the moment of torsion lock dog is stuck in the torsional channel.At this moment, the hanging setting assembly of giving up can't be extracted out in the lower seal cylinder, thereby has realized docking of said apparatus and hanger.
Lock dog is stuck in the draw-in groove of lower seal cylinder, hanger and tail pipe total weight are hung on this device, can bear and put forward load, on put forward load size depend on the intensity of lock dog and draw-in groove supporting surface, larger lock dog and larger Area of bearing can improve on maximum the permission puies forward load.
When pressing down this device, the conical surface on the urceolus is subjected to the stopping of upper surface of lower seal cylinder, thereby set down weight has been delivered on hanger and the tail pipe, and the size of maximum permission downforce depends on that the wall thickness of lower seal cylinder upper surface, larger wall thickness can improve the maximum downforce that allows.
During this device of dextrorotation, groove transfers torque on the moment of torsion lock dog, and the moment of torsion lock dog drives the torsional channel rotation, thereby has realized the rotation of hanger and tail pipe, and the maximum that its maximum rotation torque can reach the releasing tool urceolus allows torsion strength.
Set with hydraulic releasing and adopt different pressure differential, directly suppress in this device can realize setting.Continue to improve pressure and carry out hydraulic releasing, hydraulic releasing can adopt the tail pipe tubing string to build the pressure or stuff, and its basic principle is identical.For stuff, utilize ball seat to build the pressure, hydraulic pressure is applied on the piston through pressure transmission hole, and piston moves up and cuts off the piston shear pin, and drives shift-in on the piston bush and drive and move on the lock dog and retract, and carries this device on this moment and can realize giving up.Lock ring is by the effect of unidirectional inclined-plane tooth so that support set can only on move and can not move down, thereby guarantee that lock dog can't stretch out again, guarantee to give up.
When adopting machinery to give up, transfer this device, lock dog is no longer born draw load, then left-handed device 1/4 encloses, and the tooth top of top connection gear shaping sink to the recess of urceolus gear shaping, so that top connection drives central tube and lower contact is fallen, the guiding incline of lock dog bottom loses support, when on when carrying this device, lock dog is shunk, break away from the constraint of lower contact, realize giving up.
Adopt the general rotatable releasing tool that sets of hanger packer of the present utility model, can carry higher draw, compressive load, can enoughly drive the tail pipe rotation than high pulling torque, and have machinery and two kinds of modes of giving up of hydraulic pressure, can adapt to any hanger or packer by hydraulic setting.Simultaneously, this device can also recycle and reuse, thereby has saved cost.In addition, said apparatus is simple and reliable for structure, frame for movement and assemble relatively independent, only need to be according to various casing size design tool series, rather than carry out according to the physical dimension of hanger or packer, do not affect the original structure of hanger or packer, the scene can directly be connected with hanger or packer, and is easy to be reliable.
Description of drawings
Fig. 1 is general rotatable the give up structural representation of assembly of hanging setting in the releasing tool that sets of this practical hanger packer.
Fig. 2 is the partial enlarged drawing at I place among Fig. 1.
Fig. 3 is the partial enlarged drawing at II place among Fig. 1.
Fig. 4 is the general rotatable structural representation that sets hanger packer connection sealing shroud assembly in the releasing tool of this practical hanger packer.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further described in detail.
Shown in Fig. 1 to 4, the general rotatable releasing tool that sets of a kind of hanger packer comprises that give up assembly and hanger packer of hanging setting connects the sealing shroud assembly.Fig. 1 to 3 is depicted as the hanging setting assembly of giving up, and wherein 1 is top connection, pipe centered by 2, and 3 is urceolus, 4 is the urceolus shear pin, and 6 is the lock dog spring, and 7 is baffle ring, 8 is hold-down screw, and 9 is the moment of torsion lock dog, and 10 is the piston shear pin, 11 is piston, and 13 is connecting rod, and 15 is lock dog, 17 are lower contact, and 48 is piston bush, and 47 is lock ring, 53 is support set, and 46 is the support set shear pin, and 51 are band tooth lock ring, 57 is the connecting rod cover, and 54 is slip ring, and 56 is guide rod, 55 is spring, and 38 is the piston bush lock ring, and 21 is upper seal head, 22 is exterior seal ring, and 23 is the seal head joint, and 25 is upper leather cup, 28 is down cup, and 30 is ball seat, and 31 is the bottom joint.
The lower end of top connection 1 is connected by screw thread with the upper end of central tube 2, and the lower end of central tube 2 is connected by screw thread with the upper end of lower contact 17.Urceolus 3 is enclosed within the outside of central tube 2, and its upper end is provided with urceolus gear shaping 301.The lower end of top connection 1 is provided with top connection gear shaping 101, and the space width of top connection gear shaping 101 is identical with the space width of urceolus gear shaping 301.The tooth top of the tooth top of top connection gear shaping 101 and urceolus gear shaping 301 is fitted one by one.Top connection 1 is fixedly connected with by urceolus shear pin 4 with urceolus 3, and the bottom of urceolus 3 is provided with groove 19.Baffle ring 7 is enclosed within central tube 2 outsides, and the inner peripheral surface of the outer circumference surface of baffle ring 7 and top connection 1 fits.Moment of torsion lock dog 9 is embedded in the groove 19, and moment of torsion lock dog 9 is fixedly connected with baffle ring 7 by hold-down screw 8.Lock dog spring 6 is arranged between top connection 1 and the central tube 2, and the bottom of lock dog spring 6 is connected with moment of torsion lock dog 9.Piston 11 is enclosed within on the central tube 2, and piston 11 is fixedly connected with by piston shear pin 10 with central tube 2.Piston bush 48 is connected with piston 11 by screw thread.Support set 53 is enclosed within on the central tube 2, and support set 53 is fixedly connected with by support set shear pin 46 with central tube 2.The upper end arranged outside of support set 53 has support set boss 531, the inboard, lower end of piston bush 48 is provided with piston bush boss 481, the upper and lower end face of lock ring 47 fits with the lower surface of support set boss 531 and the upper surface of piston bush boss 481 respectively, when piston bush 48 moves upward, can apply motive force upwards by 47 pairs of support sets 53 of lock ring.Inside and outside both sides with tooth lock ring 51 are connected with central tube 2 and support set 53 by unidirectional inclined-plane tooth respectively, when support set 53 moves upward, can drive tooth lock ring 51 and move upward, and band tooth lock ring 51 can stop support set 53 to move downward by unidirectional inclined-plane tooth.Connecting rod cover 57 is enclosed within the outside of central tube 2, and the up and down two ends of connecting rod 13 are fixedly connected with lock dog 15 with connecting rod cover 57 respectively.Be respectively arranged with on the upper and lower end face of lock dog 15 with gradient supporting surface 14 and guiding incline 16.Slip ring 54 is enclosed within connecting rod and overlaps 57 outsides, and connecting rod cover 57 is connected with support set 53 by screw thread.Spring 55 is arranged on slip ring 54 inside, and guide rod 56 is fixedly connected with connecting rod cover 57, and spring 55 is enclosed within guide rod 56 outsides, and is connected with guide rod 56.On the sidewall of central tube 2, be provided with pressure transmission hole 37 near piston bush 48 places.Be disposed with from down to up the second rigid support ring 36, the second flexible support ring 35, the first sealing ring 34, the first flexible support ring 33, the first rigid support ring 32 that is enclosed between central tube 2 and the piston bush 48 above the pressure transmission hole 37; Be disposed with from top to bottom the 3rd rigid support ring 39, the 3rd flexible support ring 40, the second sealing ring 41, the 4th flexible support ring 42, the 4th rigid support ring 43 that is enclosed between central tube 2 and the piston bush 48 below the pressure transmission hole 37.Piston bush lock ring 38 is entrenched in the groove that arranges on the central tube 2, and the upper surface of the lower surface of piston bush lock ring 38 and the 3rd rigid support ring 39 fits.
The up and down two ends of upper seal head 21 are connected by screw thread with the lower end of lower contact 17 and the upper end of seal head joint 23 respectively.Exterior seal ring 22 is enclosed within the outside of seal head 21, and the interior latus rectum of the external diameter of exterior seal ring 22 and hanger or packer is complementary.The outer cover of seal head joint 23 has the rim of a bowl upper leather cup 25 and down cup 28 up, and the external diameter of upper leather cup 25 and down cup 28 is complementary with the interior latus rectum of hanger or packer respectively.The lower end of seal head joint 23 is connected with bottom joint 31, and ball seat 30 is threaded connection the inside at bottom joint 31.
Figure 4 shows that the hanger packer connects the sealing shroud assembly, wherein 58 is upper seal bore, and 60 is the lower seal cylinder.The lower end of lower seal cylinder 60 is connected with hanger or packer by screw thread, and the inside of upper seal bore 58 is stretched in its upper end, and is connected by screw thread with the lower end of upper seal bore 58.The interior latus rectum of lower seal cylinder 60 is identical with the maximum outside diameter of lower contact 17.Be provided with draw-in groove 62 on the inner peripheral surface of lower seal cylinder 60, the height of draw-in groove 62 is identical with the height of lock dog 15.The top of draw-in groove 62 is provided with supports inclined-plane 61, and the gradient of the supporting surface 14 of setting is identical on the gradient of supporting oblique surface 61 and the lock dog 15.The upper end of lower seal cylinder 60 is provided with torsional channel 64, and its width is identical with the width of moment of torsion lock dog 9.
The hanging setting assembly of giving up is connected the function that the sealing shroud assembly need to combine to realize whole device with the hanger packer.The hanging setting assembly hanger packer of packing into from top to bottom of giving up is connected in the sealing shroud assembly, and under the original state, lock dog 15 is subjected to the extend outside of cylinder 3 of the elastic force effect of spring 55.When lock dog 15 declines arrive the upper end of lower seal cylinder 60, be subjected to the restriction of lower seal cylinder 60 internal diameters, lock dog 15 is subject to the clamping force from outer circumference surface, and then the elastic force that overcomes spring 55 is inwardly retracted, continue to insert, when lock dog 15 arrived draw-in groove 62, lock dog 15 lost the chucking power from outer circumference surface, stretched out under the acting in conjunction of the active force of spring 55 and guiding incline 16.Moment of torsion lock dog 9 just can insert with torsional channel 64 and cooperate this moment, if moment of torsion lock dog 9 and torsional channel 64 misalignments can be aimed at just rotate to an angle a little, moment of torsion lock dog 9 inserts in the torsional channel 64 under the effect of lock dog spring 6.At this moment, said apparatus can't be from the 60 interior extractions of lower seal cylinder, thereby have realized docking of releasing tool and hanger.
Because lock dog 15 is stuck in the draw-in groove 62 of lower seal cylinder 60, thereby hanger and tail pipe total weight are hung on this device, can bear and put forward load.When pressing down this device, the conical surface on the urceolus 3 is subjected to the stopping of upper surface of lower seal cylinder 60, thereby set down weight has been delivered on hanger and the tail pipe.During this device of dextrorotation, groove 19 transfers torque on the moment of torsion lock dog 9, and moment of torsion lock dog 9 drives torsional channel 64 rotations, thereby has realized the rotation of hanger and tail pipe, and the maximum that its maximum rotation torque can reach urceolus 3 allows torsion strength.
Set with hydraulic releasing and adopt different pressure differential, directly suppress in this device can realize setting.Continue to improve pressure and carry out hydraulic releasing, hydraulic releasing can adopt the tail pipe tubing string to build the pressure or stuff, and its basic principle is identical.For stuff, utilize ball seat 30 to build the pressure, hydraulic pressure is applied on the piston 11 through pressure transmission hole 37, piston 11 moves up and cuts off piston shear pin 10, and then the transfer function by piston bush 48, lock ring 47 is so that support set 53 is cut off support set shear pin 46, support set 53 moves upward, and drivening rod overlaps shift-in on 57 and by moving on the connecting rod 13 drive lock dogs 15 and retracting, carries this device on this moment and can realize giving up.Lock ring 51 is by the effect of unidirectional inclined-plane tooth so that support set 53 can only on move and can not move down, guarantee that lock dog 15 can't stretch out again, guarantee to give up.
Carry out machinery when giving up, transfer this installation weight to lower seal cylinder 60, lock dog 15 is no longer born draw load, with top connection 1 left-handed 1/4 circle, cut off urceolus shear pin 4, the tooth top of top connection gear shaping 101 sink to the recess of urceolus gear shaping 301, thereby so that top connection 1 drives central tube 2 and lower contact 17 is fallen, the guiding incline 16 of lock dog 15 bottoms loses support, on carry this device lock dog 15 is shunk, break away from the constraint of lower contact 17, realize giving up.
The above only is preferred embodiment of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvement, these improvement also should be considered as protection domain of the present utility model.